EPA Air · by county
Air-emissions sources in Linn County, Iowa
- 336Facilities
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Every stationary source in Linn County, Iowa that holds a Clean Air Act permit or is otherwise tracked by an air agency — planned, under construction, operating, seasonal or temporarily closed. Sources EPA records as permanently closed are not listed.
Every source’s record in Linn County
Each of the 331 operating major, synthetic minor and minor sources in Linn County, Iowa has a record page: every source in Linn County, A to Z.
By emissions classification in Linn County
A source’s classification is the size band its potential emissions put it in: a major source is large enough to need a Title V operating permit, a synthetic minor has accepted limits to stay below that line, and a minor source sits below it outright.
Inspections in Linn County, by year
A compliance evaluation is the on-site or file review a state, local or federal air agency records against a permitted source.
- 2026 inspections 7
- 2025 inspections 52
- 2024 inspections 41
- 2023 inspections 41
- 2022 inspections 18
- 2021 inspections 23
- 2020 inspections 24
- 2019 inspections 18
- 2018 inspections 16
- 2017 inspections 31
Violations in Linn County, by year
A high-priority violation is the most serious class of Clean Air Act non-compliance an agency records against a source; a federally reportable violation is the next step down in severity.
Stack tests in Linn County, by year
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
- 2026 stack tests 5
- 2025 stack tests 45
- 2024 stack tests 26
- 2023 stack tests 18
- 2022 stack tests 54
- 2021 stack tests 38
- 2020 stack tests 23
- 2019 stack tests 30
- 2018 stack tests 49
- 2017 stack tests 47
Inspections in Linn County, year by year · Violations in Linn County, year by year · Stack tests in Linn County, year by year
Other counties in Iowa
Every county in the state with at least three sources on file.
- Ida County 16
- Iowa County 29
- Jackson County 26
- Jasper County 40
- Jefferson County 27
- Johnson County 77
- Jones County 29
- Keokuk County 22
- Kossuth County 33
- Lee County 52
- Louisa County 18
- Lucas County 7
- Lyon County 19
- Madison County 21
- Mahaska County 29
- Marion County 53
- Marshall County 49
- Mills County 11
- Mitchell County 28
Facilities
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.
What this page shows
This page covers Clean Air Act facilities in the EPA air register for Linn county, IA. It lists 336 facilities in Linn county, of which 15 are major sources.